This article includes information about the conjugation in Spanish of the present subjunctive for regular verbs and a link to an audio recording with the subjunctive conjugations (present tense) of "amar", "beber" and "vivir".

Except for the first person singular (yo) which ends in -o, the rest of the endings include vowel "a" for the present indicative. This vowel "a" changes to "e" in all persons for the present subjunctive. (See the endings in bold)

a ==> e

(And first person ending -o also changes to -e for the present subjunctive.)

As you can see, the first person singular (yo) of the present indicative is also ending in -o, but the rest of the endings include vowel "e". So, for the present subjunctive, all these "e" endings in the present indicative change to vowel "a" endings for the present subjunctive.

e ==> a

(And first person ending -o also changes to -a for the present subjunctive.)

If you compare the present tense indicative of "beber" and "vivir", you'll notice their endings are almost the same. The only difference is the endings in first and second persons plural:

BEBER ==> Nosotros bebemosVIVIR ==> Nosotros vivimos

BEBER ==> Vosotros bebéisVIVIR ==> Vosotros vivís

But they have something in common: The present subjunctive endings for both verbs (that is, both conjugations in this case) include vowel "a". So, for both conjugations, second and third, we can say that:

e ==> a

(And first person ending -o also changes to -a for the present subjunctive.)